Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Pohang University of Science and Technology Foundation

Soulbrain Co., Ltd.

Tae Soo Kwon

Kyung Hun Jang

Chang Yong Shin

Jong Bu Lim

Hyo Sun Hwang

Dong Ho Cho

Young-Doo Kim

Hyun Ho Choi

Eung Sun Kim

In Sun Lee

Youngsoo Kim

Hyun Gi Ahn

Won Jong Noh

Tae In Hyon

Woo Geun Ahn

Hee Jung Yu

Yong Hoon Lee

Young Chul Sung

O Hyun Jo

Ui Kun Kwon

Hoon Hee Han

Wei Yu

Hoyoung Kim

Jung Hun Lim

Dan Keun Sung

Soojin Kim

Young Seok Oh

Jung Min Moon

Jinhye Bae

Yung Yi

Gi Hong Im

Soo Hwan Lee

Keonyoung Kim

Byoung Hoon Jung

Han Sung Leem

Hyo-Sun Lee

Young Soo Kim

Young Jun Hong

Chan Soo Hwang

Hak Soo Kim

Won Jae Shin

Min Suk Kang

Heejung Yu

Tae Jin Lee

Ho Won Lee

Ohyun Jo

Sae-Young Chung

Young Hoon Lee

Won-Jae Shin

Ji Young Cha

Ju Yong Lee

Won-Yong Shin

Dong Sik Kim

Woong Sup Lee

Sung Ho Chae

Dae-Young Seol

Sae Young Chung

Ki Song Lee

Woongsup Lee

Embodiments of the inventive concepts provide a method of manufacturing a semiconductor device and a cleaning composition for an adhesive layer. The method includes preparing a semiconductor substrate to which an adhesive layer adheres, removing the adhesive layer from the semiconductor substrate, and applying a cleaning composition to the semiconductor substrate to remove a residue of the adhesive layer. The cleaning composition includes a solvent including a ketone compound and having a content that is equal to or greater than 40 wt % and less thaadminn 90 wt %, quaternary ammonium salt, and primary amine.

Method of manufacturing a semiconductor device and a cleaning composition for an adhesive layer

Embodiments of the inventive concepts provide a method of manufacturing a semiconductor device and a cleaning composition for an adhesive layer. The method includes preparing a semiconductor substrate to which an adhesive layer adheres, removing the adhesive layer from the semiconductor substrate, and applying a cleaning composition to the semiconductor substrate to remove a residue of the adhesive layer. The cleaning composition includes a solvent including a ketone compound and having a content that is equal to or greater than 40 wt % and less than 90 wt %, quaternary ammonium salt, and primary amine.

Communication methods of a macro base station which collects position information about a mobile micro base station and that is served by the macro base station, predicts a channel between the macro base station and the micro base station, and performs a handover between the macro base station and the micro base station based on a state of the predicted channel is provided.

Multi-cell communication method and system of a mobile terminal, a micro base station, and a macro base station

Provided are examples of methods of a vehicular moving relay in a communication system including the vehicular moving relay, a moving terminal, and a macro base station. Also provided is an example of a terminal. The vehicular moving relay may repeatedly transmit data to a vehicular moving terminal without requesting a handover from a macro base station to the vehicular moving relay, using a unique code that is allocated to the vehicular moving terminal from the macro base station.

Communication method of a macro base station, a vehicular moving relay, and a vehicular moving terminal

A mobile system and a base station system for effectively using a licensed spectrum and a shared spectrum are provided. The mobile system includes: an initialization unit to initialize transmitting and receiving of data using at least one of the licensed spectrum and the shared spectrum; a sensing unit to sense a spectrum for transmitting and receiving of the data via the at least one spectrum; and a transceiver to transmit and receive the data via the sensed spectrum.

Mobile system and base station system for effectively using licensed spectrum and shared spectrum

Provided are a signal transmission method and a network apparatus to control interference in a radio communication network. A terminal may transmit to the network apparatus, signal quality information associated with a radio channel formed between the terminal and a corresponding base station. The corresponding base station may output a signal received by the plurality of terminals, based on the signal quality information.

Signal transmission method and system for transmitting signal by using interference control method and/or transmission power control method

A data transmission system that determines data transmission power using a virtual cell is provided. A base station may receive transmission data from a plurality of cooperative base stations positioned around the base station, and model terminals receiving an interference signal from the base station and the plurality of cooperative base stations into a virtual cell. The base station may calculate the influence of the interference signal transmitted to the terminal, using the virtual cell, and determine a transmission power for a plurality of frequency bands based on the interference signal.

Data transmission system for determining data transmission power using a virtual cell

A mini base station connectable with the Internet including a frequency recognition unit to recognize a frequency band of an external signal transmitted from a cellular base station; and an operation frequency determination unit to determine an operation frequency band according to interference generated with the cellular base station based on the recognized frequency band of the external signal.

Mini base station connectable with internet and terminal

A user scheduling and transmission power controlling method in a hierarchical-cell communication system or a multi-cell communication system, and a device to perform the methods, are provided. Interference may occur between various cells in the hierarchical-cell communication system or the multi-cell communication system, and the interference may be controlled by adjusting transmission power of various cells. The various cells may determine an optimal transmission power based on a cost of a corresponding transmission power. Also, the various cells may serve various users and may propose an optimal user scheduling method.

Method and device for user scheduling and managing transmit power in a communication system

A method and apparatus for controlling transmission power in a wireless network area is provided. A target base station may control transmission power in cooperation with a neighboring base station and, thus, a satisfaction with a Quality of Service (QoS) of target terminals may be improved. Additionally, the target base station may determine whether to control the transmission power in cooperation with the neighboring base station, based on a possible improvement in satisfaction with the QoS of the target terminals.

Method and apparatus for controlling transmission power in wireless network

A space frequency block code signal relaying system is provided. The space frequency block code signal relaying system includes a signal detecting unit which receives, via a radio channel, a source signal sent from a source station and detects the received signal; a relay signal generation unit which generates a relay signal corresponding with the source signal transmitted from the source station to a destination node based on the received signal, the source signal and the relay signal being signals encoded in a Space Frequency Block Code (SFBC) scheme; and a signal transmitting unit which transmits the relay signal to the destination node.

Space frequency block code signal processing and relaying system

Provided are a method and system for handing over a mobile terminal between a macro base station and a vehicular base station to secure a communication service of a movable mobile terminal in a wireless communication system supporting a vehicular base station such as a vehicular relay station. The mobile terminal may be handed over by selecting a network or a vehicular base station suitable to a mobility and type of communication.

Method and system for supporting handover between macro base station and vehicular base station

An operation method of a radio communication station is provided. The operation method of a radio communication station, the operation method including: transmitting a basic pilot signal to at least one terminal located in a coverage of a preoccupied system; and transmitting a cognitive radio (CR) pilot signal.

Frequency spectrum sensing method using pilot signal and cognitive radio system using the same

Provided is an access point grouping method to be performed in a high speed mobile environment and a communication system using the access point grouping method. A system capacity may be improved by grouping users having different movement speeds with respect to various channel environments classified based on existence of an LOS channel, and by performing beamforming. Channel information with respect to a user moving at a high speed may not be required, and thus overhead may be reduced.

Method for grouping access points in high speed mobile environment and communication system using the method

Growing community of inventors

Hwaseong-si, South Korea

Tae Soo Kwon